Treatment of fabrics, paper, and other materials



Patented Aug. 30, 1927. 32

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This invention relates to the treatment of fabrics, paper and othermaterials, which term likewise includes articles made thereof, for thepurpose of printing, dyeing, coating 5 or finishing the same.

The invention consists in applying to the material by impregnating,padding, printing or otherwise, a solution containing cellulose acetateor other organic ester or ether of 1 cellulose (hereinafter referred toas a 'precipitable organic substitution derivative of cellulose) in adissolved state, and thereafter precipitating the cellulosic derivativefrom the solution upon the material. A practicall permanent impre ation,print coating or nish can thus-be o tained on the material or on thearts to which the cellulosic derivative has een.app1ie d,--and a.general improvement can be obtained in the appearance of the papers,fabrics, and I articles, doing away for instance with the flufiy effectnoticed in ordinary fabrics and kindred articles. All kinds of patternsand effects can be produced through my process, such as a.

practically permanent damask efiect, dye'ing effect and kindred effects.Dyestufis, lling materials or other added substances may be added tothecellulosic solution according to the particular efiect desired. I mause any solution of celluloseacetate, or cel ulose organic ester, orcellulose ether suitable forthe purpose, suchv a solution, for example,being a solution made as follows One pound of cellulose acetate isdissolved in 1500c. c. phenol (99% 15000. 0. form-' aldehyde (40%) ,"and1000 c. c. alcohol. Thissolut-ionfis only given as an example and doesntlimitthe range of the invention as any other'solution of celluloseacetate or cel- 40 lulose ethers or cellulose organic esters canused ina dyed or undyed state or otherwise pretreated or not.

The application of the solutions on the fabrics, paper or article forthe purpose of impre ation can be done, for example, on a pad ingmachine, in which case the fabric or article passesin between two rolls,the

lower half of one of which revolves in the A solution, toimpregnate itwith the required Application fled m 18, 1921. Serial No. 485,050.

quantity of solution. The paper, fabric or articlegpo impre ted passesthen througha precipitatingxhquid capable of precipitating thecellulosic derivative like water, or

any other appropriate liquid. In this way the cellulose acetate,cellulose ether or cellulose ester or compounds are precipitated, andthereby, permanently fixed on the fabric and separated from; thesolvents used or the greatest art of the solvents used, and may then beried, for instance, by passing over a heating arrangement for dryin andcan then be hot pressed, for instance, y assing through a hot calenderor in any ot er appropriate way.

In the case of printin' the solution can be applied to the papers,abrics or articles by using any of the known machines for print ing suchmaterials, the so printedmaterials or articles thenpassing through.the-precipitatingliquid (water) or any other approgniate liquid in orderto fix theprinting or ish'permanently thereon and remove the which thematerials or articles may then be dried and hot pressed or finished asabove.

It will be readily understoodthat the foregoing descriptionis merely anexample and that the manner of operating may be greatly varied withoutdeparting from the spirit of the inventiomp What I claim is:

1. Process for treating paper, textile and other materials, comprislngapplying thereto a solution containing a precipltable organicsubstitution derivative of cellulose, and thereafter precipitating thecellulosic derivasolvent or greatest part of the solvent, after a v tivethereon by the action of a liquid precipitant and drying and hotpressing the treated material. a

2. Process for treating paper, textile and other materials, comprisingapplying thereto a solution containing a precipitable organicsubstitution derivative of cellulose, and thereafter precipitating thecellulosig derivative thereon b water. v

3. Process or treating paper, textile and other materials, comprising.applying there to a solution containing -a precipitable organicsubstitution derivative of cellulose, and thereafter precipitating thecellulosic derivative thereon by water and thereafter drying the treatedmaterial.

4. Process for treating paper, textile and other materials, comprisingapplying thereto a solution containing a precipitable organicsubstitution derivative of cellulose, and. thereafter precipitating thecellulosic derivative thereon by water and thereafter drying and hotpressing the treated material.

5. Process for treating paper, textile and other materials, comprisingapplying thereto a solution contaimng a dissolved precipitable organicsubstitution derivative of cellulose and an added substance fordeposition therewith on the material, and thereafter precipitating thecellulosic derivative on the material by the action of a liquidprecipitant.

6. Process for treating paper, textile and other materials, comprislngapplying thereto other materials, comprisin a solution containing adissolved precipitable organic substitution derivative of cellulose andan added substance for deposition therewith on the material, andthereafter precipitating the cellulosic derivative on the material bywater.

7. Process for treating paper, textile and applying thereto a solutioncontaining cel ulose acetate, and

thereafter precipitating the cellulose acetate on the material by theaction of .a liquid precipitant.

8. Process for treating paper, textile and other materials, comprisingapplying thereto a; solution containing cellulose acetate, thereafterprecipitating the cellulose acetate on the material by a liquidprecipitant and drying the materiaL.

9. Process for treating paper, textile and 'othermaterials, comprisingapplying thereto a solution contain ng gcellulose acetate in solutionand an addedhbstance for deposition therewith on the material, andthereafter precipitating the cellulose acetate on the material by aliquid precipitant.

10. Process for treating paper, textile and other materials, comprisinga plying thereto a solution containing eel ulose acetate, thereafterprecipitating the cellulose acetate on the material by a llquidprecipitant and hot pressing the material.

11. Process for treating paper, textile and other materials, comprisingtreating the material with a solution consisting of cellulose acetate,phenol, formaldehyde and alcohol in about the proportions of 1 pound ofcellulose acetate, 1500 cubic centimetres of phenol (99%), 1500 cubiccentimetres of formaldeh de (40%) and 1000 cubic centimetres of a cohol,thereafter precipitating. the cellulose I acetate on the material by aliquid precipitant, and finishing the material.

ROBERT H. CHATHAM.

